#!/usr/bin/python3
# -*- coding: utf-8 -*-

import time
import threading

def say_hello():
	print("Hello World")
	time.sleep(2)

if __name__ == '__main__':
	for i in range(5):
		# 普通模式
		say_hello()

		# 多线程
		# t = threading.Thread(target=say_hello)
		# t.start()